LXR uboot/cmd/hash.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (c) 2012 The Chromium OS Authors.
   4 *
   5 * (C) Copyright 2011
   6 * Joe Hershberger, National Instruments, joe.hershberger@ni.com
   7 *
   8 * (C) Copyright 2000
   9 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  10 */
  11
  12#include <common.h>
  13#include <command.h>
  14#include <hash.h>
  15#include <linux/ctype.h>
  16
  17static int do_hash(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  18{
  19        char *s;
  20        int flags = HASH_FLAG_ENV;
  21
  22#ifdef CONFIG_HASH_VERIFY
  23        if (argc < 4)
  24                return CMD_RET_USAGE;
  25        if (!strcmp(argv[1], "-v")) {
  26                flags |= HASH_FLAG_VERIFY;
  27                argc--;
  28                argv++;
  29        }
  30#endif
  31        /* Move forward to 'algorithm' parameter */
  32        argc--;
  33        argv++;
  34        for (s = *argv; *s; s++)
  35                *s = tolower(*s);
  36        return hash_command(*argv, flags, cmdtp, flag, argc - 1, argv + 1);
  37}
  38
  39#ifdef CONFIG_HASH_VERIFY
  40#define HARGS 6
  41#else
  42#define HARGS 5
  43#endif
  44
  45U_BOOT_CMD(
  46        hash,   HARGS,  1,      do_hash,
  47        "compute hash message digest",
  48        "algorithm address count [[*]hash_dest]\n"
  49                "    - compute message digest [save to env var / *address]"
  50#ifdef CONFIG_HASH_VERIFY
  51        "\nhash -v algorithm address count [*]hash\n"
  52                "    - verify message digest of memory area to immediate value, \n"
  53                "      env var or *address"
  54#endif
  55);
  56